arxiv.org/abs/2510.06144 #compchem

secret lair x toothpaste for dinner

"very small claims court" aka academic conferences

arxiv.org/abs/2507.02160 #compchem

Very short follow-up after the ridiculous part I. Short excitation-based CI of RG states converges quickly.

(ordinarily, I'd reply to a post from @titouloos.bsky.social )

arxiv.org/abs/2506.09379

no joke some frogs freeze/unfreeze

Finally. This was quite a struggle.

In short: can add missing structure from a seniority-zero state with single-reference methods.

Parts 2 and 3 to come.

pubs.aip.org/aip/jcp/arti...

Scheduling a meeting at 6:30, google calendar assumes it's in the evening 😂

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number of pairs of states times one linear algebra operation

Next paper will clean up Slater-Condon rules.

This was meant to be a short project at the start of my sabbatical. Here we are, almost two years later...

Seniority-based CI works well for strongly correlated systems at an exponential cost. The goal here is to replace it with a short excitation-based CI of correlated states. Here all the required matrix elements are computed. In every case, a single linear algebra operation per pair of states.